Bandwidth conflict in AWstats

Hello dears,
I was redirect our user to see her site's BW usage details in Bandwidth & AWstats sections.
Now, Bandiwdth shows that in 8 , 9 August, this site used about 3GB bw, but in Awstats It shows about 30 meg.
Bandwidth:

AWStats:

Now user claim that our system has problem and we should reset their BW usage.
Can you clarify this conflict?